The Collaborative International Dictionary of English v.0.48:

Technicality \Tech`ni*cal"i*ty\, n.; pl. Technicalities.
   1. The quality or state of being technical; technicalness.
      [1913 Webster]

   2. That which is technical, or peculiar to any trade,
      profession, sect, or the like.
      [1913 Webster]

            The technicalities of the sect.       --Palfrey.
      [1913 Webster]

WordNet (r) 3.0 (2006):

technicality
    n 1: a detail that is considered insignificant [syn:
         technicality, trifle, triviality]

Moby Thesaurus II by Grady Ward, 1.0:

59 Moby Thesaurus words for "technicality":
   a little thing, area, bag, complexity, complexness, complication,
   convolution, crabbedness, cup of tea, entanglement, field, forte,
   hardly anything, inessential, insignificancy, intricacy,
   intricateness, involution, involvement, jargon word, line,
   long suit, main interest, manner, marginal matter,
   matter of indifference, mere nothing, metier, minor matter, naught,
   nihility, no great matter, nothing, nothing in particular,
   nothing to signify, nullity, paltry affair, perplexity,
   pet subject, peu de chose, pursuit, ramification, rien du tout,
   scarcely anything, specialism, speciality, specialization,
   specialty, strong point, style, subtlety, tanglement,
   technical term, thing, thing of naught, type, vocation, way,
   weakness



The Devil's Dictionary (1881-1906):

TECHNICALITY, n.  In an English court a man named Home was tried for
slander in having accused his neighbor of murder.  His exact words
were:  "Sir Thomas Holt hath taken a cleaver and stricken his cook
upon the head, so that one side of the head fell upon one shoulder and
the other side upon the other shoulder."  The defendant was acquitted
by instruction of the court, the learned judges holding that the words
did not charge murder, for they did not affirm the death of the cook,
that being only an inference.